CN204918662U - RH vacuum refining device with heatable baffle - Google Patents
RH vacuum refining device with heatable baffle Download PDFInfo
- Publication number
- CN204918662U CN204918662U CN201520594769.0U CN201520594769U CN204918662U CN 204918662 U CN204918662 U CN 204918662U CN 201520594769 U CN201520594769 U CN 201520594769U CN 204918662 U CN204918662 U CN 204918662U
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- CN
- China
- Prior art keywords
- empty room
- real empty
- baffle
- vacuum chamber
- baffle plate
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Abstract
The utility model discloses a RH vacuum refining device with heatable baffle can reduce the real empty room molten steel splash of RH harm. The device includes: ladle, real empty room and dip pipe, characterized by the device have added two baffles along the department down in that real empty room is suitable for reading, lay on real empty room's lateral wall, and symmetric placement one on the other, the distance is 20 -60cm about two baffles, and the baffle has twined induction coil on every side, and wrap up with refractory material the baffle outside. The utility model discloses two baffles have been added in real empty room for the molten steel that splashes is blocked by the baffle, has reduced the cold steel of real empty room department suitable for reading, makes the current 1 -5m that highly reduces of real empty room 2 aspect ratio, has saved and has built real empty room's material cost with real empty room's occupation of land space by laying bricks or stones, and twined induction coil around the baffle, makes the baffle have the heating function, can heat according to need, and then play the effect of the real empty room inner -cooling steel of clearance.
Description
Technical field
The utility model relates to the device of ferrous metallurgical industry RH vacuum refinement, particularly a kind of RH equipment for vacuum refining with adding heat shield.
Background technology
RH refining techniques is developed jointly successfully in nineteen fifty-nine by German Rheinstahl and Hutlenwerke company.Vacuum refinement combines with Circulating Flow of Molten Steel by RH, has treatment cycle short, and throughput is large, the advantages such as refining effect is good, is applicable to smelting cycle short, and the converter steel factory that throughput is large adopts.In order to improve the production efficiency of RH, shorten treatment cycle, RH equipment technology is updated in the following areas:
1, improve vacuum chamber height: the height from nineteen fifty-nine to RH in 1987 is increased to more than 10m from about 5m, its object mainly: provide sufficient reaction compartment for improving purifying reaction speed under vacuum; To give security condition for realizing oxygen blast and secondary combustion under vacuum; Improve the working conditions on vacuum chamber top, reduce the cold steel of knot.2, circulation is increased: the speed of response due to RH depends mainly on the circular flow of molten steel, and the circular flow of molten steel and downtake area are directly proportional.By expanding soaking tub diameter or adopting the method for the increase downtake areas such as oval soaking tub effectively can improve the circular flow of molten steel, accelerate the speed of response of RH.3, exhaust capacity is improved: after the vapor jet pump exhaust capacity of 160tRH is increased to 400kg/h by 300kg/h by Zhong Gang company, and Argon amount is brought up to 680L/min by 600L/min, make terminal w (C) be reduced to 30 × below 10-6 by (30 ~ 50) × 10-6, decarburization time shortens to 15min by 20min.After inland Steel Plant of the U.S. transform six of RH grades of vapor jet pumps as Pyatyi vapor jet pump/water-ring pump system, cooling water consumption reduces to 5t/ stove by 21t/ stove, and energy consumption reduces by 73%.4, Argon amount is increased, optimize gon technics: Japanese NKK Fushan factory is by RH technological transformation, and expand soaking tub diameter to 0.70m from 0.55m, the maximum Argon amount of soaking tub brings up to 4m3/min by 3m3/min, and bottom RH vacuum tank, set up 8 2mm Argon pipes, have received good effect.RH decarburization time only 15min, makes molten steel terminal w (C) reach 10 × 10
-6.5, set up multifunctional oxygen lance: RH adopts top blowing oxygen technique, not only increases apparent decarbonization rate, simultaneously because secondary combustion makes the wall surface temperature of vacuum chamber top refractory materials reach 1600 DEG C, molten steel dross can be prevented.Adopt RH powder injection process, not only achieve the target of liquid steel dephosphorization, desulfurizing and refining, and be conducive to improving RH deaeration capacity.Adopt RH to push up rifle baking process and at hot donut under air, molten steel dross can be prevented, and the slag dross formed can be melted, have very large contribution to the operating rate improving RH.Therefore, set up and there is RH top blowing oxygen, dust and toast the multifunctional oxygen lance of 3 large functions, to improving RH operation, improve refining efficiency and RH operating rate significant.
For the RH refining unit used in large production at present, tie cold steel to prevent RH vacuum chamber top and usually the height of vacuum chamber is brought up to more than 12m, vacuum chamber height can be made to reduce accordingly so the problem that vacuum chamber ties cold steel can be solved, not only save space and more can reduce costs.
Patent publication No.: CNCN102851456A, disclose the method for the cold steel of a kind of online removal RH vacuum chamber, the method is characterised in that, during RH process molten steel, adopts top rifle oxygen blowing method to remove cold steel online.The method achieve the quick removal of cold steel in vacuum chamber, cold steel can be removed in 30min the soonest, effectively avoid tubular stinger inner chamber to melt the blocking of slag.But the demand of vacuum chamber height does not solve, and can not play space better, save cost.
Patent publication No.: CN203373386U, disclose a kind of RH equipment for vacuum refining realizing vacuum chamber lifting, this device comprises frame, ladle, vacuum chamber and the vacuum chamber top be connected with described vacuum chamber, watercooling elbow, water-cooled extraction pipe, gas cooler and vacuum loading systems, also comprises lifting frame.In the RH treating processes of this refining unit, ladle is without the need to promoting, and security is high.But do not solve the problem that anti-cold steel produces, can not cost be effectively reduced.
Utility model content
The utility model provides a kind of RH equipment for vacuum refining with adding heat shield, can reduce RH vacuum chamber molten steel splash harm.
A kind of RH equipment for vacuum refining with adding heat shield that the utility model provides comprises: ladle, vacuum chamber and soaking tub, it is characterized in that this device with the addition of two pieces of baffle plates along place down vacuum chamber is suitable for reading, be placed on the sidewall of vacuum chamber, symmetrical placement one on the other, two pieces of upper and lower distances of baffle plate are 20-60cm, be tied with ruhmkorff coil around baffle plate, baffle plate outside refractory materials wraps up.
The face of overlooking of described baffle plate is that a circle be made up of major arc and string thereof lacks shape, and the radius of major arc is identical with vacuum chamber internal diameter, and the thickness of baffle plate is 20-100cm.
The utility model is compared with existing same device, its significantly beneficial effect be embodied in: in vacuum chamber, with the addition of two pieces of baffle plates, splashing molten steel is blocked by baffle plate, decrease the cold steel at vacuum chamber place suitable for reading, make the existing height reduction 1-5m of vacuum chamber 2 aspect ratio, save the occupation of land space of material cost and the vacuum chamber of building vacuum chamber by laying bricks or stones, and be tied with ruhmkorff coil around baffle plate, baffle plate is made to have heating function, can heat as required, and then play the effect of cold steel in cleaning vacuum chamber.
Accompanying drawing explanation
Fig. 1 is a kind of RH equipment for vacuum refining structural representation with adding heat shield.
Fig. 2 is baffle plate, ruhmkorff coil and refractory materials schematic diagram in a kind of RH equipment for vacuum refining with adding heat shield.
Fig. 3 is the schematic top plan view of baffle plate in a kind of RH equipment for vacuum refining with adding heat shield.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, a kind of RH equipment for vacuum refining with heat shield can be added, this device is made up of ladle 1, vacuum chamber 2 and soaking tub 3, it is characterized in that this device with the addition of two pieces of baffle plates 4 along place down vacuum chamber 2 is suitable for reading, be placed on the sidewall of vacuum chamber 2, one on the other symmetrical placement, two pieces of baffle plate about 4 distances are 20-60cm, be tied with ruhmkorff coil 5 around baffle plate 4, baffle plate 4 outside refractory materials 6 wraps up.The face of overlooking of described baffle plate 4 is that a circle be made up of major arc and string thereof lacks shape, and the radius of major arc is identical with vacuum chamber 2 internal diameter, and the thickness of baffle plate 4 is 20-100cm.
Claims (2)
1. one kind with the RH equipment for vacuum refining that can add heat shield, this device comprises: ladle, vacuum chamber and soaking tub, it is characterized in that this device with the addition of two pieces of baffle plates along place down vacuum chamber is suitable for reading, be placed on the sidewall of vacuum chamber, symmetrical placement one on the other, two pieces of baffle plates are up and down apart from being 20-60cm, and be tied with ruhmkorff coil around baffle plate, baffle plate outside refractory materials wraps up.
2. a kind of RH equipment for vacuum refining with heat shield can be added according to claim 1, it is characterized in that the face of overlooking of described baffle plate is that a circle be made up of major arc and string thereof lacks shape, the radius of major arc is identical with vacuum chamber internal diameter, and the thickness of baffle plate is 20-100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594769.0U CN204918662U (en) | 2015-08-07 | 2015-08-07 | RH vacuum refining device with heatable baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594769.0U CN204918662U (en) | 2015-08-07 | 2015-08-07 | RH vacuum refining device with heatable baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204918662U true CN204918662U (en) | 2015-12-30 |
Family
ID=54967808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594769.0U Expired - Fee Related CN204918662U (en) | 2015-08-07 | 2015-08-07 | RH vacuum refining device with heatable baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204918662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866277A (en) * | 2018-08-27 | 2018-11-23 | 北京科技大学 | A kind of single-mouth refining furnace and refinery practice of smelting ultralow-carbon stainless steel |
-
2015
- 2015-08-07 CN CN201520594769.0U patent/CN204918662U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866277A (en) * | 2018-08-27 | 2018-11-23 | 北京科技大学 | A kind of single-mouth refining furnace and refinery practice of smelting ultralow-carbon stainless steel |
| CN108866277B (en) * | 2018-08-27 | 2023-10-17 | 北京科技大学 | Single-nozzle refining furnace and refining process for smelting ultra-low carbon stainless steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |